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| SOPAC Research |
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Note: a more detailed description of SOPAC's research will be available soon. Overview SOPAC's primary scientific role is to support high precision geodetic and geophysical measurements using Global Positioning System (GPS) satellites, particularly for the study of earthquake hazards, tectonic plate motion, plate boundary deformation, and meteorological processes. SOPAC investigators also conduct research on the implementation, operation and scientific applications of continuously monitoring GPS arrays and Synthetic Aperture Radar (SAR) interferometry. Resources Nikolaidis, R., Observation of Geodetic and Seismic Deformation with the Global Positioning System, Ph.D. Thesis, University of California, San Diego, 2002 Describes a model that takes into account offsets (coseismic or otherwise), linear velocity, and annual and semi-annual fluctuations (for stations that have at least two years and one year of data, respectively). For stations that experience post-seimic relaxation, an exponentially decaying term is also estimated. In some cases where a station experiences coseismic and postseismic deformation, changes in the linear velocity are also estimated. Appendix |